GX20
4 – 3
CONFIDENTIAL
Figure 3 RF BLOCK DIAGRAM (1/2)
[RF]
PGA PART
I&Q
MOD
PHASE
DETECTOR
1/2
90DEG
SHIFT1/2
SERIAL DATA
INTERFACE
1/2
ITXN
ITXP
QTXN
QTXP
IRXP
IRXN
QRXN
QRXP
SYNTHEN
SYNTHDATA
SYNTHCLK
AFCDAC
TCXOOUT
RAMPDAC
BS0
BS1
BS2
RF
IC901
HD155148TF
TCX951
1/2
LOOP
FILTER
90DEG
SHIFT
LNA
LNA
PGA
+B(VRF)
35
39
37
20
21
22
23
36
1
2
3
4
+B(VTCXO)
33
28,30,31,32,41,46
+B(VRF)
2,13,16,18,47,56
1,3,6,9,12,14,19
29,34,40,45,48,51
24
25
26
27
1
1
4
5
4
11
1
8
7
38
IFVCO
EGSM 975CH - 4CH 656MHz
5CH - 124CH 640MHz
DCS 512CH - 665CH 640MHz
666CH - 885CH 656MHz
PCS 512CH - 810CH 640MHz
4
5
IC991 NL27WZ08
IC992 TC7W00FK
IC993 NL27WZ08
1/2
26MHz
VCTCXO
IF SYNTHESIZER
90DEG
SHIFT
RF SYNTHESIZER
LNA
90DEG
SHIFT
LOGIC
1/2
1/2
Содержание GX20
Страница 38: ...GX20 2 32 CONFIDENTIAL Figure 64 Contact points Figure 65 Turning power on Points Push ...
Страница 91: ...GX20 3 7 CONFIDENTIAL MEMO ...
Страница 96: ...GX20 4 5 CONFIDENTIAL MEMO ...